. >>> three nato troops were killed in eastern afghanistan today. nato has not identified the nationalities of the troops killed. most of the troops in the east are american. >>> a group of teenagers leave for japan today from san francisco as part of a special exchange program. 32 high school students from around the u.s. were invited to study the japanese language and culture. it's in memory of two american teachers that were killed in the earthquake and tsunami. students are already brushing up on their japanese. [speaking in foreign language] >> i'm sorry. >> what did you just say? >> i said greeting for hello and good afternoon. >> the students will stay with families in osaka immersing themselves in the culture for the next two weeks. >>> let's go over to tara. she has word of an accident in oakland. >> we have a car that crashed into a house that is off of market and west street. it's actually underneath the 580 overpass. we have a crew on the way and we'll bring you live pictures later in our show. right now let's take a look at highway 4 th